Syringe



Oct. 2 1923.

1,469,764 B. F. CRISENBERRY Y SYRINGE Filed oct. 2o. 1920 Patented 0a. a, 1923.'

' UNITED sr BENJAMIN F. cnIsENBEnnY, or INDIANAroLIs, INDIANA, AssIGNon'oF Two-'.r-HIBDS f To Monnrs I.. WHITE, or INDIANnroLIs INDIANA.

'sYRINen appnatmn'aiea october 20.1920.. serial 'N6'. 418,190.

T o all whom it may concern: 'I'

' Be it known that I, BENJAMIN F. Cn1s'nN--l BERRY, a citizen of the'United States, re siding at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Syringe, of which thefollowing is a specification.`

It is the object of my invention to provide a syringe, especially for vaginal use, which may be used both to inject and withdraw the fluid used, through separ-ate passages I invention: Fig. 1 is an elevation of a syringey embodying my invention; Fig. 2 is a central longitudinal section through such syringe,'with the bulb in elevation; Fig. 1s a section on the line 3-3 of F 1g. 1; F1g. 4

is a perspective View of the lower' end of4 the valve stem, in inverted position and on an enlarged scale; and Fig. 5 is -a plan of the disk valve, with its attaching screw in section.

A collapsibly resilient hollow bulb 10, spherical and of rubber, has a screw fitting 11 in its single opening, and on thls screw fitting 11 is detachably screwed the nozzle 12. This nozzle is in the form of a tube, cylindrical internally, andcurvingly flaring externally toward the base end by which 1t is mounted on the screw fitting 11, and in general is oval in cross-section at its large end but circular in cross section at its smaller end, the two ends being connected by smooth curves. This shape is found to be most advantageous in use. The tubular nozzle 12 is open at its outer or smaller end, which is proyided with an internal' curvingly tapered valve seat 13 with which cooperates a tapered valve 14 provided on a ball-head 15, the tapers ,of the valve seat 13 and valve 14 Ibeing so Larranged that such two parts engage one another only at a distance from the edge and are separated from each other at the edge so that there will be no possibility of pinching between them. Thev head 15 is fixed to the outer end of a valve stem 16, which has -a close sliding fit within thetube 12 l of the nozzle', and on theinner end of such stem 16 is fixed, by a -screw17,l a disk v18 located within a chamber 19 in the base of the nozzle 12'. The respective surfacesy 20 and 21 of the disk 18 and chamber19 remote from the bulb 10 are plane surfaces,

[which cooperate to forma valve, which con# trols open1ngs'22 which lead through the surface 21 1nto grooves 2.3 vformed in the outer v surface of the flaring part of the nozzle.

from theopenend'of the nozzle. The surfaces 14 and V20 are farther apart than are the surfaces 13 and 21, so that when the surfaces 1,3,4 and 14 are in cont-act the surfaces 20 and 21 are out of'contact, and vice versa. The v-alve structure including the/parts 15, 16, and 18 moves as a unit upon variations in pressure produced by manipulation of the bul'blO, moving .upward when' the bulb is pressed and downward when the bulb is released.- The valve stem 16 is provided/ with a plurality of longitudinally extending slots 24 in its surface, which slots extend from the lower end .of such valve stem lalmost or `completely to the. valve surface 14. The lower ends 25 ofthese grooves 24 are countersunk, as shown in F lgs. 2 and 4,and' communicate with an annular groove 26 formed in the up-per surface of the disk 18; and such disk is provided with a plurality of holes 27 extending through the disk opening into such annular groove 26. This provides a connection from the space below thedisk 18 through the holes 27, the annular groove 26, and the longitudinal grooves 24 to the outer or. upper end of the nozzle when the valve is raised, regardless of whether or `not theV holes 27 andy grooves 24 register, so thatv the disk 1,8 may be attached to the valve stem 16 in any' angular position; and in addition the valve stern hasv a' guiding lit Within the tubular nozzle 12 without interfering withv the liquid flow therethrough, by which guiding fit all lateral movement of the valve stem 16 and head 15 is prevented, vso that at the same time-proper fit of both valves is assured and the possibility of pinching between the valve 14 and the edge of the valve seat 13- is eliminated.

` In operation, the bulb 10'is lled with the desired liquid in the usual manner, and when i 4These vgrooves 23 are some distance away loo I the device is in position the bulb l is squeezed. This raises the valve structure l-16-l8, thus closing the openings .22 and opening the valve 1.3-4.4, and continued squeezing of the bulb forces liquid from the bulb through the passages 27--26-24c and out through the open end of the nozzle between the surfaces -13 and 14. The liquid discharge is in the form of a flaring conical sheet. When the discharge has been completed and it is desired to Withdraw the liquid the bulb lisallowed to expand, producing a suction which shifts the valve structure 15--16-18 to close the valve 13--14 and `open the openings 22, and then withdraws the liquid into the bulb l0 through the passages 23-22 and chamber 19. rllhis is done without possibility of injury, as the places Where thev valve surfaces engage one another are allJinternal and the suction passages leading to the valve surfaces L-21 are of neeeee sliding lit within said nozzle and being provided with longitudinal passages, and two valves fixed on opposite endsof said stem and operating to close said discharge opening and said inlet openings respectively .when said valve stem is moved in opposite directions.

2. In a syringe, the combination of a bulb, a nozzle mounted thereon, said nozzle hav' ing a discharge opening at the end andy inlet openings at the sides, a valve stem having a sliding t'within said nozzle and bein provided with longitudinal passages, an two valves fixed on op osite ends of-said stein and operating te c ose said discharge opening and said inlet openings respectively when said valve stem is moved in opposite directions, the valve which controls said inlet openings being provided with an annular groove into which said longitudinal passages of said stem open and also being provided with holes through it communicating with said annularl groove.

ln witness whereof, l have hereunto setmy hand at lndianapolis, Indiana, this 16th dred and twenty. y v

BENJAMIN ll", CRlSlENBERRY.

-day of October, A. D. one thousand nine hun- 

